Abstract: An improved cut-in box and parts to facilitate the installation of a cut-in box and the safer connection of a cut-in box to at least one cable behind a wall. The improved cut-in box does not require the time-consuming use of a guide wire to route a flexible conduit behind a wallboard through a hole in the cut-in box during the installation process. A first embodiment of the invention involves an improved cut-in box to facilitate connection to at least one cable behind a wall. A second embodiment of the invention involves a cut-in box mounting bracket to clamp a cut-in box to a wall opening. A third embodiment of the invention involves an anti-short mechanism for an electrical cut-in box.